【摘要】 提出了一种选取压电执行器优化位置的拓扑优化方法·其基本思想是利用可控矩阵的奇异值单元灵敏度来识别压电执行器优化位置·讨论了智能结构模态可控性的度量问题 ;推导了可控矩阵奇异值单元灵敏度公式 ;给出了确定压电执行器优化位置的优化准则 ;用算例说明了方法的有效性·更多还原

【Abstract】 A new method for determining optimal locations of the distributed piezoelectric actuators of intelligent structures was presented. The main idea is that element sensitivities of singular values are used to identify optimal locations of actuators. In order to determine optimal locations of piezoelectric actuators, following steps can be done: firstly, the measurement of modal controllability of intelligent structures is discussed; secondly, formulas of element sensitivities of singular values of controllable matrices with distinct and repeated singular values are developed; lastly, the optimal criterion of locations of actuators is presented according to the actuator element sensitivities of the singular value of controllable matrice. A numerical example was given to illustrate the validation and application of the presented method.更多还原